Which one of the following statements is incorrect about menstruation?
At menopause in the female, there is especially abrupt increase in gonadotropic hormones.
The beginningof the cycle of menstruation is called menarche.
During normal menstruation about $40\ mL$ blood is lost.
The menstrual fluid can easily clot.
Match the columns.
Column 1 | Column II |
$(a)$ $6-14$ days | $(1)$ It is known as menstrual cycle |
$(b)$ $1-5$ days | $(2)$ Polar body is down |
$(c)$ $15-28$ days | $(3)$ It is known as proliferative phase |
$(4)$ Endometrium is prepared forimplantation of embryo |
What is menstrual cycle? Which hormones regulate menstrual cycle?
What are the events that take place in the ovary and uterus during follicular phase of the menstrual cycle ?
Given below is a flow chart showing ovarian changes during menstrual cycle. Fill in the spaces giving the name of the hormones responsible for the events shown.
$\boxed{\rm {Primary follicles}}$
$\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \downarrow \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \leftarrow \,\boxed A$
$\boxed{\rm {Graafian follicle}}$
$\,\,\,\,\,\,\,\,\,\,\,\,\,\, \downarrow \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \leftarrow \,\boxed B$
$\,\,\,\,\,\,\,\,\,\,\,\boxed{\rm {Ovum}}$
$\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \downarrow \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \leftarrow \,\boxed C$
$\boxed{\rm {Corpus leuteum}}$
How many eggs are released by a human ovary in a month? How many eggs do you think would have been released if the mother gave birth to identical twins? Would your answer change if the twins born were fraternal?